7538251651 has 16 divisors (see below), whose sum is σ = 8806846464. Its totient is φ = 6317845344.

The previous prime is 7538251631. The next prime is 7538251681. The reversal of 7538251651 is 1561528357.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7538251651 - 2²⁵ = 7504697219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7538251598 and 7538251607.

It is not an unprimeable number, because it can be changed into a prime (7538251631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352501 + ... + 373273.

It is an arithmetic number, because the mean of its divisors is an integer number (550427904).

Almost surely, 2^7538251651 is an apocalyptic number.

7538251651 is a deficient number, since it is larger than the sum of its proper divisors (1268594813).

7538251651 is a wasteful number, since it uses less digits than its factorization.

7538251651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21930.

The product of its digits is 252000, while the sum is 43.

The square root of 7538251651 is about 86823.1055134519. The cubic root of 7538251651 is about 1960.7559602154.

The spelling of 7538251651 in words is "seven billion, five hundred thirty-eight million, two hundred fifty-one thousand, six hundred fifty-one".